Several things come to mind from the post and that is the Accubond did exactly what it was supposed to do. Apparantly it is a bullet that works best for broadside shots in the lung area.

For Elk in my 300 H&H I use the 200 gr. Nosler partition and its a very good elk bullet IMO...

If you want to kill them pronto, then get a bigger bore like a 338 or 375 and use 300 gr. bullets, they do very little meat damage, cut a big hole and they leave great blood trails and kill very quickly..your shooting hi velocity with the 300 Win Mag. and that just equates to bloodshot meat and your not going to get around it and still kill them effectively.